Dixon AC300 Aluminum 356T6 Boss-Lock Type C Cam and Groove Hose Fitting, 3" Socket x 3" Hose ID Barbed Cam and groove fitting with safety clips that lock into lugs for a secure connection One female cam coupler end for connecting to male groove adapters and one hose shank end for connecting to hoses (Type C) Aluminum for resisting corrosion and tarnishing Corrosive-resistant investment cast stainless steel cam lock levers for locking the fitting's male groove adapter into female cam couplers Nitrile butadiene rubber seal rated for petroleum service, ethanol to E100, and biodiesel to B20